i have the 9.5" in the back but i have the 11" in my garage without tires, the previous owner told me 305's would fit better than 315's because they dont rub. would spacers correct this or does it rub on the outer part of the well?

 

Are they the 36mm offset ZR1 wheels or are they the GS style ZR1 wheels with the 50mm offset?

 

i actually dont know, they are from the vette though not ss or firehawk

 

If the offset is 36mm, they will stick out about an inch past the fender. If you dont mind that then 315s most likely will fit with some miner mods, including rolling the fender lip and cleareancing the inner fender well.

Many people have 315s so yours should fit.

 

i dont care how far they stick out as long as they go all the way under the car. i dont want to be able to see the axel from the top of the car